10. An proton-antiproton pair is produced by a 1.95 x 10° MeV photon. What is the kinetic energy of the antiproton if the kinetic energy of the proton is 49.20 MeV? Use the following Joules-to-electron-Volts conversion leV = 1.602 x 10-19). The rest mass of a proton is 1.67 x 10-2 kg. X 22 MeV
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